It has been another busy week for many of Australia's top brokers. This has led to the release of a number of broker notes.

Three broker buy ratings that you might want to know more about are summarised below. Here's why brokers think these ASX shares are in the buy zone right now:

Charter Hall Group (ASX: CHC)

According to a note out of Citi, its analysts have upgraded this property developer's shares to a buy rating with an $18.50 price target. The broker points out that when interest rates fall, it usually has a positive impact on the share price performance of property companies. Especially if it results in a return of equity flows into Australia. In light of this, it thinks that a recent trade tariff-induced market selloff has created a buying opportunity for investors. The Charter Hall share price is trading at $16.16 on Friday.

Orica Ltd (ASX: ORI)

A note out of Goldman Sachs reveals that its analysts have retained their buy rating on this specialty chemicals and commercial explosives company's shares with an improved price target of $21.50. This follows the company's investor day update earlier this week which included the announcement of a revised financial framework and a $400 million buyback. Goldman believes that this signals a period of consolidation (having completed multiple large acquisitions over the last two years) and augments earnings per share leverage, which has been missing from its growth recently despite its solid operational performance. In addition, the broker highlights that it sees scope for ongoing capital management given Orica's focus on cash generation and the potential proceeds from future surplus land sales. The Orica share price is fetching $17.17 at the time of writing.

Seek Ltd (ASX: SEK)

Analysts at Bell Potter have initiated coverage on this job listings giant's shares with a buy rating and $27.00 price target. According to the note, the broker believes that Seek is well-placed to benefit from falling interest rates. That's because it usually boosts the job market, which in turn boosts job ad volumes. Bell Potter suspects that this will drive yields and margin improvements on its new unified platform. All in all, the broker is forecasting an earnings per share compound annual growth rate of 19% between FY 2024 and FY 2028. As a result, it sees a lot of value in its shares at current levels. The Seek share price is trading at $22.48 this morning.